Tracing the plane line

[gmbtempe]

So obviously this is a key concept in the golf machine, you trace the plane line, if I understand it correctly, with the right forearm and #3 pressure point. I finally saw a picture of a few pro's, and compared it to myself. Here is Tiger, on plane:



Here is myself, well above the plane, like in the next county.



I really would like to understand how to get it on plane like Tiger, or Els.........I assume this would be a critical step in my learning process?